Tool/software:
The peripheral strictly follows the circuit and parameters of the lmx2820 demo board. The FPGA used for control has successfully sent and read back register data, proving that the data has been successfully configured to the 2820's registers. The reference end has a switch that toggles between 100M and the low-frequency feedback signal after mixing. The process for configuring the PFDIN mode is as follows: 1. Configure the charge pump to tri-state, 2. Switch the reference switch to the mixed signal, 3. Configure the PFDIN mode with addresses 15 and 57, 4. Configure the PFDIN divider, 5. Set the charge pump to normal mode, 6. Set R0 to 0x6020.
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